Home / 20,331.54-28,053.82-11,716.38

Finding the Fourth Proportional to 20,331.54, 28,053.82 and 11,716.38

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Solution

The fourth proportional to 20,331.54, 28,053.82 and 11,716.38 is: 16,166.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.54 : 28,053.82 = 11,716.38 : x
  2. Step 2: Convert to fraction form
    20,331.54/28,053.82 = 11,716.38/x
  3. Step 3: Cross multiply
    20,331.54x = 28,053.82 × 11,716.38
  4. Step 4: Simplify right side
    20,331.54x = 328,689,215.57
  5. Step 5: Solve for x
    x = 328,689,215.57/20,331.54
  6. Step 6: Final answer
    x = 16,166.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.